Tire-stem pressure gauge



E A.A BADOWSKI TIRE STEM PRESSURE GAUGE man ` Filed Oct. 19. 1921 I l. .........f........n...n...... 0 H. EEEEL \N\\ \N\ ,f///// lll. |Ill\ i ,sr-era lfihgg atraen eanow'snr; or cirennnsron, lwnsfr vrnerivra, Assreiv'on #ro-frIaoivrnrnR vnLvn Acons'Gitarren orY Mannion, or CHARLESTON, lvvnsr vrrvsrnri'i, 'A' oor..-

PORATION OF WEST VIRGrIll'IA.`

TIRE-STEM .PRESSURE GAUGE.,

i applicati@ sied coronaria, 1921. semaine. 508,729.

To zZZtohomi/mag/ concern.' A 5` Be lit'lrnown, that AnrnnnfBAnowsrii, .a citizen of the UnitedQStaes, residing ,at Charleston, -in the countyof Kanawha and State of uWest Virginia, have'inventednew and 4 useful ,.lmprovements in [Tire-Stem Pressure Gauges, oit which the following is a specication. A .v i' Tire stem pressure gauges have been formed with a plunger movably mounted in the stem and indicating by its movement the pressure to which the stem is subjected, the tion passage and having communication with the inner portion of the tube main tained through a rubber or extensible tube. The'. movement of the plunger has been resisted by a spring. The present invention relates to means for attaching the rubber tube and also the spring to the plunger.

riihe invention is illustrated in the accompanying drawings as follows Fig. 1 shows a central section through the ielloe with a pressure gauge in place thereon.

F ig. 2 a central vertical section through the pressure gauge.

Fig. 3 a modication of the manner of securing the tube to the plunger, the modification being the preferred form.

1 marks the lfelloe, 2 arim on the felloe, 3 a tire, 4 a tube, and 5 an opening through the elloe.

The stem or sleeve 6 is provided with a head 7. The tube is clamped betweenthis head and a washer 8, the spreader 9 being provided and the nut 10 exerting the clamping pressure. The sleeve or stem has an opening 11 extending through it. The plun ger 12 is slidingly mounted in the opening,

the plunger having a passage extending through it provided with the usual inflation valve 13. A scale 14 is arrangedon the outer surface or" the plunger and indicates the iniation pressure. An anchor vplug 15 is screwed into the inner end of the opening 11 and has the passage 16 through it. rubber tube 17 extends over the nipple 18 on the upper end of the plug 15-and is secured by a wrapping 18?. The spring 19 is also secured to the anchor plug 15, the anchor plug being screw-threaded at. 2O to receive the spring A screw 21 extends into a screwthreaded opening leading to the alun er beine )rovided with an iniia 2D inflation passage of the plunger. ."lliehead 2110izv the screw is arranged inzithe `end of the tube, theV 4screwbeingprovided with a squaredopeningby means of which it may be turned ,by an implement extending through .the tube; Theend of the-tube ex tends inwardly on the head 23,astridV a'fe'rrule 25 is arranged immediately in engagement with the Vend ofthe tube andv abuts a ring 26 having a tapered opening, the screw clamping the end of the tube against the t'errule and ring and forming a closure thereby plunger. Thev spring 19 is secured to the plunger by beingscrewed on to threads 27 on the end of the plunger as shown in F ig.

2. In Fig. 3 the outer periphery or the ring 26 is screw-threaded and the spring 19 is screwed Aon to these screw threads. Where this structure is used the ferrule permits of the turning 01 the screw relatively'to the ring so that the spring it secured is not disturbed.

Vhat I claim as new is 1. in a tire stem pressure gauge, the combination witha sleeve; a vplunger in the sleeve indicating by its movement the inlation pressure in the sleeve, said plunger being provided with an inflationy passage to which leads a screw-threaded openingg'al rubber tube `forming an extensible ineanslot communication from the plunger to a sta` tionary part of the sleeve; a screw screwed into the screw-threaded opening in the plunger and having a head arranged within the end 01 the rubber tube; of a ring having a tapered opening into which the end of the rubber tube projects, said tube being clamped in the ring and secured plunger by the screw.

2.1n a tire stem pressure gauge, the com# bination with a sleeve; a plunger in the sleeve indicating by its movement the inriaI tion pressure in the sleeve, said plunger` being provided with an inflation passage to which leads a screw-threaded opening;- a rubber tube forming an extensible means of communication from the plunger to a stationary part of the sleeve; a screw screwed into the screw-threaded opening in the plunger and having a head arranged within being ,clamped in. the ring all@ essere@ t9 and 'also securing the tube to the,v

to the i the plungerby the screw; and a ferrule betweenrthe screw and ring.

3. ln e tire stem pressure gauge', the combination with a sleeve; a plunger in the sleeve indicating by its movement the i'nfla tion pressureV in the sleeve, said plunger be ing provided with an inflation passage to which leads a screw-threaded opening; a rubber tube forming an extensible means of communication from the plunger to a stationary part of the sleeve; a screw' screwed into the screw-threaded opening in the plunger and having a head arranged within the, end of the rubber tube of a ring having a tapered opening into which the end of the rubber tube projects, Ysaid tube being clamped in the ring and secured to the plunger by the screw; and a ferrule between the screw and ring".

e'. lln' a tire stern pressure gauge, the coni'- bination with a sleeve; a plunger in the sleeve indicating by its movement the iniation pressure in the sleeve, said plunger being provided with an inflation passage to which leads a screw-threaded opening; a

rubber tube forming an extensible means of communication from the plu-nger' to a stetionary part of ther sleeve; a screw screwed into the screw-threaded opening in the plunger and having a head arranged within the end of the rubber tube; of a ring into which the end of the tube projects, said tube. being clamped in the ring and secured to the plunger by the screw; a errule between the 'screw and ring; and a spring secured to the ring and resisting' the movement or the plunger. p

ln testimony whereof l have hereunto set my hand. u

ALFRED BALDUVVSK-l. 

